- add option 'w' to ps (wide output, optional feature defaults to off).
- move to ENABLE_ and use shorter boilerplate.
sizes without selinux-support:
text data bss dec hex filename
356 0 0 356 164 procps/ps.o.with-w
300 0 0 300 12c procps/ps.o.no-w
302 0 0 302 12e procps/ps.o.oorig
This commit is contained in:
Bernhard Reutner-Fischer
@@ -2245,17 +2245,12 @@
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"$ printf \"Val=%d\\n\" 5\n" \
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"Val=5\n"
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#if !defined(CONFIG_SELINUX) && !defined(CONFIG_PS_FEATURE_WIDE)
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#if !defined CONFIG_SELINUX && !ENABLE_FEATURE_PS_WIDE
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#define USAGE_PS "\n\tThis version of ps accepts no options."
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#else
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#define USAGE_PS "\nOptions:"
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#endif
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#ifdef CONFIG_SELINUX
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#define USAGE_NONSELINUX(a)
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#else
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#define USAGE_NONSELINUX(a) a
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#endif
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#ifdef CONFIG_PS_FEATURE_WIDE
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#if ENABLE_FEATURE_PS_WIDE
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#define USAGE_PS_WIDE(a) a
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#else
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#define USAGE_PS_WIDE(a)
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@@ -2269,7 +2264,6 @@
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USAGE_SELINUX("\n\t-c\tshow SE Linux context") \
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USAGE_PS_WIDE("\n\tw\twide output")
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#define ps_example_usage \
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"$ ps\n" \
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" PID Uid Gid State Command\n" \
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@@ -43,6 +43,15 @@ config CONFIG_PS
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help
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ps gives a snapshot of the current processes.
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config CONFIG_FEATURE_PS_WIDE
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bool " Enable argument for wide output (-w)"
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default n
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depends on CONFIG_PS
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help
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Support argument 'w' for wide output.
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If given once, 132 chars are printed and given more than
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one, the length is unlimited.
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config CONFIG_RENICE
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bool "renice"
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default n
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68
procps/ps.c
68
procps/ps.c
@@ -4,19 +4,7 @@
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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* Licensed under the GPL v2, see the file LICENSE in this tarball.
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*/
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#include <stdio.h>
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@@ -30,32 +18,47 @@
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#include <termios.h>
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#include <sys/ioctl.h>
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#include "busybox.h"
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#ifdef CONFIG_SELINUX
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#if ENABLE_SELINUX
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#include <selinux/selinux.h> /* for is_selinux_enabled() */
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#endif
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static const int TERMINAL_WIDTH = 79; /* not 80 in case terminal has linefold bug */
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#define TERMINAL_WIDTH 80
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extern int ps_main(int argc, char **argv)
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{
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procps_status_t * p;
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int i, len;
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int terminal_width = TERMINAL_WIDTH;
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#ifdef CONFIG_SELINUX
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int i, len, terminal_width;
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#if ENABLE_SELINUX
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int use_selinux = 0;
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security_context_t sid=NULL;
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if(is_selinux_enabled() && argv[1] && !strcmp(argv[1], "-c") )
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use_selinux = 1;
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#endif
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get_terminal_width_height(0, &terminal_width, NULL);
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#if ENABLE_FEATURE_PS_WIDE || ENABLE_SELINUX
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/* handle arguments */
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/* bb_getopt_ulflags(argc, argv,) would force a leading dash */
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for (len = 1; len < argc; len++) {
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char *c = argv[len];
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while (*c) {
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if (ENABLE_FEATURE_PS_WIDE && *c == 'w')
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/* if w is given once, GNU ps sets the width to 132,
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* if w is given more than once, it is "unlimited"
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*/
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terminal_width =
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(terminal_width==TERMINAL_WIDTH) ? 132 : INT_MAX;
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#if ENABLE_SELINUX
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if (*c == 'c' && is_selinux_enabled())
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use_selinux = 1;
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#endif
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c++;
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}
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}
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#endif
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/* Go one less... */
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terminal_width--;
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#ifdef CONFIG_SELINUX
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#if ENABLE_SELINUX
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if (use_selinux)
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printf(" PID Context Stat Command\n");
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else
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@@ -64,8 +67,8 @@ extern int ps_main(int argc, char **argv)
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while ((p = procps_scan(1)) != 0) {
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char *namecmd = p->cmd;
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#ifdef CONFIG_SELINUX
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if ( use_selinux )
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#if ENABLE_SELINUX
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if (use_selinux )
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{
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char sbuf[128];
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len = sizeof(sbuf);
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@@ -85,18 +88,19 @@ extern int ps_main(int argc, char **argv)
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safe_strncpy(sbuf, "unknown",7);
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}
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len = printf("%5d %-32s %s ", p->pid, sbuf, p->state);
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}
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}
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else
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#endif
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if(p->rss == 0)
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len = printf("%5d %-8s %s ", p->pid, p->user, p->state);
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else
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len = printf("%5d %-8s %6ld %s ", p->pid, p->user, p->rss, p->state);
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i = terminal_width-len;
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if(namecmd != 0 && namecmd[0] != 0) {
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if(namecmd && namecmd[0]) {
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if(i < 0)
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i = 0;
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i = 0;
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if(strlen(namecmd) > i)
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namecmd[i] = 0;
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printf("%s\n", namecmd);
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@@ -108,7 +112,9 @@ extern int ps_main(int argc, char **argv)
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namecmd[i-2] = 0;
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printf("[%s]\n", namecmd);
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}
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free(p->cmd);
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/* no check needed, but to make valgrind happy.. */
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if (ENABLE_FEATURE_CLEAN_UP && p->cmd)
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free(p->cmd);
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}
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return EXIT_SUCCESS;
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}
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